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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
Voltage
CMD63B800
CMD63B800
In Stock
From
$4,674.47
Siemens
800
600
CMDLB3800T33W
CMDLB3800T33W
In Stock
From
$5,772.60
Westinghouse
800
600
CND312T36W
CND312T36W
In Stock
From
$4,769.68
Westinghouse
1200
600
CND3800T33W
CND3800T33W
In Stock
From
$2,107.77
Eaton
800
600
CND3800T35W
CND3800T35W
In Stock
From
$5,772.60
Westinghouse
800
600
CNDC312T36W
CNDC312T36W
In Stock
From
$10,459.44
Cutler Hammer
1200
600
CRD316T33W
CRD316T33W
In Stock
From
$6,116.92
Westinghouse
1600
600
CRD320T33W
CRD320T33W
In Stock
From
$4,957.85
Eaton
2000
600
CSR2100N
CSR2100N
In Stock
From
$279.27
Cutler Hammer
100
240
D130
D130
In Stock
From
$4.06
Siemens
30
240
DK2400W
DK2400W
In Stock
From
$1,689.27
Eaton
400
240
ECB34020G3
ECB34020G3
In Stock
From
$503.10
Square D
20
480
ED2020
ED2020
In Stock
From
$210.05
Eaton
20
240
ED2040
ED2040
In Stock
From
$309.55
Westinghouse
40
240
ED2060
ED2060
In Stock
From
$950.00
Cutler Hammer
60
240
ED2100
ED2100
In Stock
From
$286.69
Eaton
100
240
ED2150L
ED2150L
In Stock
From
$753.41
Eaton
150
240
ED2150Y
ED2150Y
In Stock
From
$347.99
Eaton
150
240
ED3060
ED3060
In Stock
From
$733.68
Cutler Hammer
60
240
ED3125L
ED3125L
In Stock
From
$399.64
Eaton
125
240
ED3150W
ED3150W
In Stock
From
$1,014.90
Eaton
150
240
ED3175V
ED3175V
In Stock
From
$1,012.82
Eaton
175
240
ED41B015
ED41B015
In Stock
From
$85.22
Siemens
15
120
EDB14030EPDBA
EDB14030EPDBA
In Stock
From
$319.70
Square D
30
277
Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.


Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.